Process for producing a horn-like mass.



UNITED STATES PATENT OFFICE.

- HANS SGHWARZ'BERG AND EMANUEL NOA, OFBERLIN, GERMANY.

PROCESS FOR PRODUCING A HORN-LIKE MASS.

Specification of Letters Patent.

Patented Aug. 27, 1907;

A li ation fil d November 26, 1906. Serial No. 345,220.

To all whom it may concern:

Be it known that we, HANs ScHwARzBEne and EMANUEL NOA, both subjects ofthe King of Prussia, and residents of Berlin, Kingdom of Prussia, GermanEmpire, (whose post-oilice addresses'are respectively Berlin,Landsbergerstrasse 91, and Berlin, Dresdnerstrasse 38,) have invented aProcess for Producing a Horn-Like Mass, of which the following is afull, clear, and exact description.

Our inveiltionrelates to a process without pressure. Its greatplasticity, pliability and flexibility distinguishes our'mass favorablyfrom other well known similar substances.

Our mass is obtained by mixing correspondingquantities of casein,starch, gelatin, glycerin, paraflin and the sulfonic acid of a-naphthoL'to which suitable filling materials may be added.

We dissolve the casein in an aqueous solution of bo-' rax till it formsa paste and then a paste made of starch and water is added. To thispaste melted paraffin and gelatin is added, -the latter being firstadvantageouslymixed with one percent. of its weight of glycerin: Thewhole mixture is then thoroughly'stirred till it forms a uniiorm mass.Finally a corresponding quantity of tY-naphtholsulfonic acid and iinecessaryfilling material is added, after which the whole mess is rolledinto plates for the purpose oi removing most oithe water. If necessarythe plates can be altogetherdesiccated by immersing them in alcohol.'This desiccated mass is then treated with acetate of alumina. for thepurpose of rendering it hard. The influence of the acetate of aluminarendering the material s0metimes brittle and thereby difiicult to workwe may sometimes prefer-to harden the finished article by exposing it tovapors generated from a solution of acetateoi alumina, to which acertain quantity of hexamethylene tetramin is added.

' These vapors contain formaldeh de ammonia, which 4 for producing ahornlike mass, which may be easily formed with or acid is meant 'a'naplitho fonlc acid, substantially amdescribed. v;

causes a hardening of the whole mass toa compara- 40 tively' great depthand yet leave it sufiiciently elastic for all practical purposes.

Ii thick pieces or plates of our mass are to beproduced the best methodisto roll it first into plates as thin as possible. The necessary numberof these plates are then rolled together by employing an extremely highpressure. In this manner plates of diffe'rentcolors may be rolle designsmay be obtained.

The followingproporti' I t ployed for producing our-mass m an example:'50 parts'of I i parts of starch, 25 ptgelati erin, 7-10 partslof "and.tholsulionic acid, th'" V I i d together, by which peculiartionedbefore; It should be 1i sulfonic acid,

What wed aim by Letters Paten 1. A hornlike' mass 7 uniform mixture of"casein, starch, gelatingglycerimpai afli d a-napljithols"ul- 2. Aprocess tor producing iaghornlike. mass byimixing q-naphtholsulrouicigainful suitable-proportions and then rolling the wholemasspsubstantlally asf described'i 3. A process 'i'or produc'in ahornhke'm'a'ssby: mixing.

thoroughly casein,"starch, gelatin, glycerin, 'parafli-n anda'naphthol'sulfonlc acid in suitable proportions,- then rolling thewholemassiandflnally 'hardening it by 't he"'infl'uence o1 vaporsgenerated-from )1 solution of acetate or alumina andhexamethylenetetramin,'substantiallyias' describem 1 HANS SCHWARZBERG;EM NU NOA; I wltnessesi'l' v /5Vortn1ttmizElmer, 1 w" Hnnnr IHASPEBQU

